The A.O. Smith AO-MF-ADV is an under-the-sink purifier which filters water directly from your existing faucet. This drinking water filter reduces up to 99% of 77 harmful contaminants including chlorine, chloramine, lead, mercury, BPA, PFOA/PFOS and cysts. It also improves the turbidity of the water. The water is filtered by four filtration methods but nothing is added to your water during the filtration process. If you have more than four people in your household then this is perfect for you!






Why Choose Our Product


    • Filters contaminants that you can see, smell and taste, and those you can’t
    • IAPMO tested and certified to NSF/ANSI standards 42, 53, 401 and 473.
    • Easy installation
    • 1-year warranty




20.5 in.


4 in.


4 in.

Filter Life:

6 months

Flow Rate:

1.5 (Gallons per minute)

Min. Feed Temp:

35° Fahrenheit

Max. Feed Temp:

100° Fahrenheit

Product Weight:

3 lbs.

How It Works

Filtration Method 1:

Activated Carbon

Filtration Method 2:

Catalytic Carbon

Filtration Method 3:

Ion Exchange

Filtration Method 4:

Mechanical Filtration


It can filter up to 784 gallons of water. Replace the filter every 6 months.